Punching out 

When a caller on XM Radio's most popular program, Opie and Anthony on XM202 The Virus, calls in to make a point then leaves abruptly. The caller says 'Punching out' to signify the end of their call.

"Hey b-b-b-boys. The power of Dice compels you, the power of Dice compels you...Punching out."

Punching out by grrr,everything's taken February 18, 2009

punching out a slab 

Means that you are about to take an even bigger crap than "giving birth to a Texan"!

After eating at Hometown buffet, I had to "punch out a slab"!

punching out a slab by cesar May 13, 2005

Punching the cunt out of someone 

To savagely assault a person whom you feel would benefit from such an act.

“If you steal my fucking stapler one more time I’m going to punch the cunt out of you”

Punching the cunt out of someone by TSC - Eric April 12, 2005